简介：Kevin Hart - playing a version of himself - is on a death-defying quest to become an action star. And with a little help from John Travolta, Nathalie Emmanuel, and Josh Hartnett - he just might pull it off.
简介：Black holes stand at the limit of what we can know. To explore that edge of knowledge, the Event Horizon Telescope links observatories across the world to simulate an earth-sized instrument. With this tool the team pursues the first-ever picture of a blac